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https://gitlab.freedesktop.org/pipewire/pipewire.git
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fmt-ops: add neon optimizations for format conversion
This commit is contained in:
Wim Taymans
parent
afb93eb6ea
commit
527dc89365
4 changed files with 277 additions and 1 deletions
265
spa/plugins/audioconvert/fmt-ops-neon.c
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265
spa/plugins/audioconvert/fmt-ops-neon.c
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/* Spa
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*
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* Copyright © 2020 Wim Taymans
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*/
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#include <string.h>
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#include <stdio.h>
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#include <math.h>
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#include "fmt-ops.h"
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static void
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conv_s16_to_f32d_2s_neon(void *data, void * SPA_RESTRICT dst[], const void * SPA_RESTRICT src,
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uint32_t n_channels, uint32_t n_samples)
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{
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const int16_t *s = src;
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float *d0 = dst[0], *d1 = dst[1];
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#ifdef __aarch64__
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uint32_t stride = n_channels << 1;
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unsigned int remainder = n_samples & 3;
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n_samples -= remainder;
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asm volatile(
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" cmp %[n_samples], #0\n"
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" beq 2f\n"
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"1:"
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" ld2 { v0.h, v1.h }[0], [%[s]], %[stride]\n"
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" ld2 { v0.h, v1.h }[1], [%[s]], %[stride]\n"
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" ld2 { v0.h, v1.h }[2], [%[s]], %[stride]\n"
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" ld2 { v0.h, v1.h }[3], [%[s]], %[stride]\n"
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" subs %[n_samples], %[n_samples], #4\n"
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" sshll v2.4s, v0.4h, #0\n"
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" sshll v3.4s, v1.4h, #0\n"
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" scvtf v0.4s, v2.4s, #15\n"
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" scvtf v1.4s, v3.4s, #15\n"
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" st1 { v0.4s }, [%[d0]], #16\n"
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" st1 { v1.4s }, [%[d1]], #16\n"
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" bne 1b\n"
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"2:"
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" cmp %[remainder], #0\n"
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" beq 4f\n"
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"3:"
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" ld2 { v0.h, v1.h }[0], [%[s]], %[stride]\n"
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" subs %[remainder], %[remainder], #1\n"
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" sshll v2.4s, v0.4h, #0\n"
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" sshll v3.4s, v1.4h, #0\n"
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" scvtf v0.4s, v2.4s, #15\n"
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" scvtf v1.4s, v3.4s, #15\n"
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" st1 { v0.s }[0], [%[d0]], #4\n"
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" st1 { v1.s }[0], [%[d1]], #4\n"
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" bne 3b\n"
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"4:"
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: [d0] "+r" (d0), [d1] "+r" (d1), [s] "+r" (s), [n_samples] "+r" (n_samples),
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[remainder] "+r" (remainder)
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: [stride] "r" (stride)
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: "cc", "v0", "v1", "v2", "v3");
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#else
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uint32_t n;
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for(n = 0; n < n_samples; n++) {
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*d0++ = S16_TO_F32(s[0]);
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*d1++ = S16_TO_F32(s[1]);
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s += n_channels;
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}
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#endif
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}
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static void
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conv_s16_to_f32d_1s_neon(void *data, void * SPA_RESTRICT dst[], const void * SPA_RESTRICT src,
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uint32_t n_channels, uint32_t n_samples)
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{
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const int16_t *s = src;
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float *d = dst[0];
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#ifdef __aarch64__
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uint32_t stride = n_channels << 1;
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uint32_t remainder = n_samples & 3;
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n_samples -= remainder;
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asm volatile(
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" cmp %[n_samples], #0\n"
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" beq 2f\n"
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"1:"
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" ld1 { v0.h }[0], [%[s]], %[stride]\n"
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" ld1 { v0.h }[1], [%[s]], %[stride]\n"
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" ld1 { v0.h }[2], [%[s]], %[stride]\n"
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" ld1 { v0.h }[3], [%[s]], %[stride]\n"
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" subs %[n_samples], %[n_samples], #4\n"
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" sshll v1.4s, v0.4h, #0\n"
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" scvtf v0.4s, v1.4s, #15\n"
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" st1 { v0.4s }, [%[d]], #16\n"
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" bne 1b\n"
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"2:"
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" cmp %[remainder], #0\n"
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" beq 4f\n"
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"3:"
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" ld1 { v0.h }[0], [%[s]], %[stride]\n"
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" subs %[remainder], %[remainder], #1\n"
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" sshll v1.4s, v0.4h, #0\n"
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" scvtf v0.4s, v1.4s, #15\n"
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" st1 { v0.s }[0], [%[d]], #4\n"
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" bne 3b\n"
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"4:"
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: [d] "+r" (d), [s] "+r" (s), [n_samples] "+r" (n_samples),
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[remainder] "+r" (remainder)
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: [stride] "r" (stride)
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: "cc", "v0", "v1");
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#else
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uint32_t n;
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for(n = 0; n < n_samples; n++) {
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*d++ = S16_TO_F32(s[0]);
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s += n_channels;
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}
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#endif
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}
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void
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conv_s16_to_f32d_neon(struct convert *conv, void * SPA_RESTRICT dst[], const void * SPA_RESTRICT src[],
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uint32_t n_samples)
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{
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const int16_t *s = src[0];
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uint32_t i = 0, n_channels = conv->n_channels;
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for(; i + 1 < n_channels; i += 2)
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conv_s16_to_f32d_2s_neon(conv, &dst[i], &s[i], n_channels, n_samples);
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for(; i < n_channels; i++)
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conv_s16_to_f32d_1s_neon(conv, &dst[i], &s[i], n_channels, n_samples);
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}
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static void
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conv_f32d_to_s16_2s_neon(void *data, void * SPA_RESTRICT dst, const void * SPA_RESTRICT src[],
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uint32_t n_channels, uint32_t n_samples)
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{
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const float *s0 = src[0], *s1 = src[1];
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int16_t *d = dst;
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#ifdef __aarch64__
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uint32_t stride = n_channels << 1;
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uint32_t remainder = n_samples & 3;
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n_samples -= remainder;
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asm volatile(
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" cmp %[n_samples], #0\n"
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" beq 2f\n"
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"1:"
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" ld1 { v0.4s }, [%[s0]], #16\n"
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" ld1 { v1.4s }, [%[s1]], #16\n"
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" subs %[n_samples], %[n_samples], #4\n"
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" fcvtzs v0.4s, v0.4s, #31\n"
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" fcvtzs v1.4s, v1.4s, #31\n"
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" sqrshrn v0.4h, v0.4s, #16\n"
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" sqrshrn v1.4h, v1.4s, #16\n"
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" st2 { v0.h, v1.h }[0], [%[d]], %[stride]\n"
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" st2 { v0.h, v1.h }[1], [%[d]], %[stride]\n"
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" st2 { v0.h, v1.h }[2], [%[d]], %[stride]\n"
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" st2 { v0.h, v1.h }[3], [%[d]], %[stride]\n"
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" bne 1b\n"
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"2:"
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" cmp %[remainder], #0\n"
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" beq 4f\n"
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"3:"
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" ld1 { v0.s }[0], [%[s0]], #4\n"
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" ld1 { v2.s }[0], [%[s1]], #4\n"
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" subs %[remainder], %[remainder], #1\n"
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" fcvtzs v0.4s, v0.4s, #31\n"
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" fcvtzs v1.4s, v1.4s, #31\n"
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" sqrshrn v0.4h, v0.4s, #16\n"
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" sqrshrn v1.4h, v1.4s, #16\n"
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" st2 { v0.h, v1.h }[0], [%[d]], %[stride]\n"
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" bne 3b\n"
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"4:"
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: [d] "+r" (d), [s0] "+r" (s0), [s1] "+r" (s1), [n_samples] "+r" (n_samples),
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[remainder] "+r" (remainder)
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: [stride] "r" (stride)
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: "cc", "v0", "v1");
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#else
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uint32_t n;
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for(n = 0; n < n_samples; n++) {
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d[0] = F32_TO_S16(s0[n]);
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d[1] = F32_TO_S16(s1[n]);
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d += n_channels;
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}
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#endif
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}
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static void
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conv_f32d_to_s16_1s_neon(void *data, void * SPA_RESTRICT dst, const void * SPA_RESTRICT src[],
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uint32_t n_channels, uint32_t n_samples)
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{
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const float *s = src[0];
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int16_t *d = dst;
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#ifdef __aarch64__
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uint32_t stride = n_channels << 1;
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uint32_t remainder = n_samples & 3;
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n_samples -= remainder;
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asm volatile(
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" cmp %[n_samples], #0\n"
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" beq 2f\n"
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"1:"
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" ld1 { v0.4s }, [%[s]], #16\n"
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" subs %[n_samples], %[n_samples], #4\n"
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" fcvtzs v0.4s, v0.4s, #31\n"
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" sqrshrn v0.4h, v0.4s, #16\n"
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" st1 { v0.h }[0], [%[d]], %[stride]\n"
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" st1 { v0.h }[1], [%[d]], %[stride]\n"
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" st1 { v0.h }[2], [%[d]], %[stride]\n"
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" st1 { v0.h }[3], [%[d]], %[stride]\n"
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" bne 1b\n"
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"2:"
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" cmp %[remainder], #0\n"
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" beq 4f\n"
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"3:"
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" ld1 { v0.s }[0], [%[s]], #4\n"
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" subs %[remainder], %[remainder], #1\n"
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" fcvtzs v0.4s, v0.4s, #31\n"
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" sqrshrn v0.4h, v0.4s, #16\n"
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" st1 { v0.h }[0], [%[d]], %[stride]\n"
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" bne 3b\n"
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"4:"
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: [d] "+r" (d), [s] "+r" (s), [n_samples] "+r" (n_samples),
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[remainder] "+r" (remainder)
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: [stride] "r" (stride)
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: "cc", "v0");
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#else
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uint32_t n;
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for(n = 0; n < n_samples; n++) {
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*d = F32_TO_S16(s0[n]);
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d += n_channels;
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}
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#endif
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}
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void
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conv_f32d_to_s16_neon(struct convert *conv, void * SPA_RESTRICT dst[], const void * SPA_RESTRICT src[],
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uint32_t n_samples)
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{
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int16_t *d = dst[0];
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uint32_t i = 0, n_channels = conv->n_channels;
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for(; i + 1 < n_channels; i+=2)
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for(; i + 1 < n_channels; i += 2)
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conv_f32d_to_s16_2s_neon(conv, &d[i], &src[i], n_channels, n_samples);
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for(; i < n_channels; i++)
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conv_f32d_to_s16_1s_neon(conv, &d[i], &src[i], n_channels, n_samples);
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}
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